Thiadiazole carboxylic acid moiety of tiadinil, SV-03, induces systemic acquired resistance in tobacco without salicylic acid accumulation
Thiadiazole carboxylic acid moiety of tiadinil, SV-03, induces systemic acquired resistance in tobacco without salicylic acid accumulation
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DOI：
10.1584/jpestics.31.329
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发表时间：
2006-08
影响因子：
2.4
通讯作者：
M. Yasuda;M. Kusajima;M. Nakajima;K. Akutsu;T. Kudo;S. Yoshida;H. Nakashita
中科院分区：
文献类型：
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作者：
M. Yasuda;M. Kusajima;M. Nakajima;K. Akutsu;T. Kudo;S. Yoshida;H. Nakashita
系统性获得性抗性（SAR）是植物中一种有效的先天免疫系统，通过水杨酸（SA）介导的途径诱导，对多种病原体有效。本文对水稻中噻地尼代谢产物4-甲基-1,2,3-噻二唑-5-羧酸（SV-03）的SAR诱导活性进行了表征。土壤淋施SV-03可诱导烟草广泛的抗病性和PR基因表达。对NahG转基因烟草植株的进一步分析表明，sv -03诱导的抗性增强不需要SA。因此，我们认为SV-03通过触发与SA积累水平相同或下游的信号来诱导SAR。
Systemic acquired resistance (SAR) is a potent innate immunity system in plants that is effective against a broad range of pathogens and induced through the salicylic acid (SA)-mediated pathway. Here we have characterized the SAR induction activity of 4-methyl-1,2,3-thiadiazole-5-carboxylic acid (SV-03) identified as a metabolite of tiadinil in rice. Soil drench application of SV-03 induces a broad range of disease resistance and PR gene expression in tobacco. Further analyses using NahG transgenic tobacco plants indicate that SV-03-induced resistance enhancement does not require SA. Therefore, it is suggested that SV-03 induced SAR by triggering signaling at the same level as or downstream of SA accumulation.